The Ford P4JA is a 1,499 cc, inline‑four turbocharged petrol engine produced between 2018 and 2023. It features dual overhead camshafts (DOHC), 16 valves, direct fuel injection (GTDI), and a single — scroll turbocharger. In standard form it delivered 118 kW (160 PS) at 6,000 rpm and 240 Nm of torque at 1,600–4,000 rpm, offering responsive urban performance with improved fuel economy.
Fitted to models such as the Fiesta ST, Puma ST, and Focus Active, the P4JA was engineered f…
All production years (2018–2023) meet Euro 6d-TEMP or Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/8765).
The Ford P4JA is a 1,499 cc inline‑four turbocharged petrol engine engineered for compact performance models (2018–2023). It combines gasoline direct injection (GTDI) with a single-scroll turbocharger to deliver strong low-end torque and agile response. Designed to meet Euro 6d-TEMP and Euro 6d emissions standards, it integrates a gasoline particulate filter (GPF) for compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,499 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 82.5 mm | |
Power output | 118 kW (160 PS) @ 6,000 rpm | |
Torque | 240 Nm @ 1,600–4,000 rpm | |
Fuel system | Gasoline direct injection (GTDI), up to 250 bar | |
Emissions standard | Euro 6d-TEMP (2018–2020); Euro 6d (2021–2023) | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single-scroll turbo (BorgWarner) | |
Timing system | Chain‑driven DOHC | |
Oil type | Ford WSS‑M2C946‑B1 (SAE 5W‑30) | |
Dry weight | 118 kg |
The Ford P4JA was used across Ford's Global B platform with transverse mounting. This engine received platform-specific adaptations—reinforced mounts in the Fiesta ST and modified intake routing in the Puma ST—creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The P4JA's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in high-mileage or aggressively driven engines. Ford internal data from 2021 indicated a notable share of pre-2021 Fiesta ST units required HPFP replacement before 80,000 km, while UK DVSA records show minimal GPF-related failures due to robust regeneration logic. Extended oil change intervals and use of non-spec oil increase cam follower scuffing risk, making correct oil specification and interval adherence critical.
Analysis derived from Ford technical bulletins (2018–2023) and UK DVSA failure statistics (2019–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The P4JA is generally reliable with proper maintenance. Early models (2018–2020) had HPFP cam follower issues, resolved in later builds. Using correct 5W-30 oil (WSS-M2C946-B1) and regular servicing ensures longevity. Most well-maintained examples exceed 150,000 km without major issues.
Top issues include HPFP cam follower wear, GPF clogging from short trips, turbo actuator faults, and timing chain tensioner wear. These are documented in Ford service bulletins like 20S078 and are manageable with OEM parts and proper diagnostics.
The P4JA 1.5L EcoBoost was used in the Fiesta ST (Mk8, 2018–2023), Puma ST (2020–2023), and Focus Active (2019–2022). All are transverse-mounted three-cylinder applications meeting Euro 6d-TEMP or Euro 6d emissions standards.
Yes. Stage 1 ECU remaps typically yield +20–25 kW safely due to strong internals. However, the stock HPFP and turbo limit gains beyond 200 PS without hardware upgrades. Many Fiesta ST owners remap for improved torque curve and throttle response.
Real-world consumption is ~7.8 L/100km (city) and ~5.4 L/100km (highway), or about 36 mpg UK combined in the Fiesta ST. Expect 32–40 mpg (UK) depending on driving style—performance tuning reduces economy significantly.
Yes. The Ford P4JA is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing severe internal damage. Regular inspection of chain tensioner and guides is essential.
Ford specifies SAE 5W-30 oil meeting WSS-M2C946-B1 standard. This low-SAPS formulation protects the GPF and ensures HPFP cam follower lubrication. Change every 16,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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